ams AS8580 Capacitive Sensor

AS8580 is a capacitive sensor detecting the change of capacitance in different applications. The capacitive sensor measures the relative change of capacitance. This can be used for capacitive touch applications, proximity or human presence detection, fluid level and quality measurements as well as many other applications. AS8580 captures the sinusoidal current response caused by a forced sinusoidal voltage. Based on that, the change of capacitance in various applications can be detected. Besides capacitive changes, the resistive component in various applications can be detected as well. This can be useful e.g. to determine/compensate (environmental) disturbances such as moisture, which changes a parallel resistive component along with a change in capacitance. This high precision performance sensor also supports a multitude of diagnostic features that meet standard ASIL B functional safety requirements. The capacitive sensing IC is specifically designed to work under high electromagnetic disturbances (EMC) due to adjustable frequencies. AS8580 has a SPI Interface for reading measurement values and configuration. It is available in TSSOP-14 package and operates with 5V.